Napkin ring



FIG. 1 is a front perspective view of a napkin ring showing my new design;

FIG. 2 is a front or rear elevational view thereof;

FIG. 3 is a top or bottom plan view thereof; and

FIG. 4 is a side elevational view thereof from the right or left of FIG. 2. 

The ornamental design for a napkin ring, substantially as shown and described. 